<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>登陆界面</title>
    <style>
        html,
        body {
            height: 100%;
            margin: 0;
            min-width: 400px;
            min-height: 200px;
        }

        #app {
            background-color: #375660;
            height: 100%;
            display: flex;
            justify-content: center;
            align-items: center;
          
        }

        * {
            margin: 0;
            box-sizing: border-box;
        }

        .container {
            width: 400px;
            
           
        }

        h1 {
            color: white;
            text-align: center;
        }

        input {
            width: 100%;
            padding: 10px;
            border-radius: 4px;
            border: 0;
        }

        button {
            width: 100%;
            padding: 10px;
            background-color: #3894ff;
            color: white;
            border: 0;
            cursor: pointer;
            border-radius: 4px;
           
        }

        .mb15 {
            margin: 15px;
        }
    </style>
</head>

<body>
    <!-- 最外层的大容器 -->
    <div id="app">
        <!-- 登录区域的容器 -->
        <div class="container">
            <!-- 标题 -->
            <div class="mb15">
                <h1>GRTS-MMS</h1>
            </div>
            <!-- 用户名 -->
            <div class="mb15">
                <input type="text" placeholder="账号">
            </div>
            <!-- 密码 -->
            <div class="mb15">
                <input type="password" placeholder="密码">
            </div>
            <!-- 按钮 -->
            <div class="mb15">
                <button>登录</button>
            </div>
        </div>
    </div>

</body>

</html>